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All results from a given calculation for C3H8 (Propane)

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-118.775273
Energy at 298.15K-118.783699
HF Energy-118.276719
Nuclear repulsion energy82.547320
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3171 2998 56.09      
2 A1 3091 2922 6.72      
3 A1 3087 2919 47.32      
4 A1 1558 1473 3.83      
5 A1 1538 1454 0.17      
6 A1 1472 1392 2.53      
7 A1 1213 1147 0.44      
8 A1 902 853 0.50      
9 A1 375 354 0.00      
10 A2 3160 2987 0.00      
11 A2 1536 1452 0.00      
12 A2 1344 1271 0.00      
13 A2 929 879 0.00      
14 A2 225 213 0.00      
15 B1 3169 2996 107.23      
16 B1 3124 2954 5.78      
17 B1 1552 1467 12.24      
18 B1 1254 1186 0.00      
19 B1 767 725 1.30      
20 B1 283 267 0.00      
21 B2 3169 2996 31.63      
22 B2 3085 2917 40.40      
23 B2 1542 1458 1.88      
24 B2 1460 1380 4.39      
25 B2 1411 1334 2.13      
26 B2 1097 1037 0.38      
27 B2 953 901 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 23232.7 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 21964.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at QCISD/6-31+G**
ABC
0.98279 0.28162 0.24925

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.589
C2 0.000 1.271 -0.261
C3 0.000 -1.271 -0.261
H4 0.876 0.000 1.244
H5 -0.876 0.000 1.244
H6 0.000 2.168 0.362
H7 0.000 -2.168 0.362
H8 0.883 1.308 -0.904
H9 -0.883 1.308 -0.904
H10 -0.883 -1.308 -0.904
H11 0.883 -1.308 -0.904

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10 H11
C11.52901.52901.09421.09422.18012.18012.17242.17242.17242.1724
C21.52902.54282.15592.15591.09183.49551.09291.09292.80142.8014
C31.52902.54282.15592.15593.49551.09182.80142.80141.09291.0929
H41.09422.15592.15591.75282.49952.49952.51503.06913.06912.5150
H51.09422.15592.15591.75282.49952.49953.06912.51502.51503.0691
H62.18011.09183.49552.49952.49954.33651.76661.76663.80373.8037
H72.18013.49551.09182.49952.49954.33653.80373.80371.76661.7666
H82.17241.09292.80142.51503.06911.76663.80371.76533.15642.6166
H92.17241.09292.80143.06912.51501.76663.80371.76532.61663.1564
H102.17242.80141.09293.06912.51503.80371.76663.15642.61661.7653
H112.17242.80141.09292.51503.06913.80371.76662.61663.15641.7653

picture of Propane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.488 C1 C2 H8 110.801
C1 C2 H9 110.801 C1 C3 H7 111.488
C1 C3 H10 110.801 C1 C3 H11 110.801
C2 C1 C3 112.504 C2 C1 H4 109.427
C2 C1 H5 109.427 C3 C1 H4 109.427
C3 C1 H5 109.427 H4 C1 H5 106.444
H6 C2 H8 107.932 H6 C2 H9 107.932
H7 C3 H10 107.932 H7 C3 H11 107.932
H8 C2 H9 107.738 H10 C3 H11 107.738
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability